competitor

Competitor is a synonym of fighter.

As nouns the difference between competitor and fighter

is that competitor is a person or organization against whom one is competing while fighter is a person who fights, a combatant.

As nouns the difference between competitor and counterpart

is that competitor is a person or organization against whom one is competing while counterpart is either of two parts that fit together, or complement one another.

As nouns the difference between partner and competitor

is that partner is partner, associate while competitor is a person or organization against whom one is competing.

As nouns the difference between competitor and comparable

is that competitor is a person or organization against whom one is competing while comparable is something suitable for comparison.

As an adjective comparable is

able to be compared (to).

As nouns the difference between peer and competitor

is that peer is while competitor is a person or organization against whom one is competing.

As nouns the difference between competitor and performer

is that competitor is a person or organization against whom one is competing while performer is one who performs for, or entertains, an audience.

As a proper noun nemesis

is (label).

As a noun competitor is

a person or organization against whom one is competing.

As nouns the difference between viewer and competitor

is that viewer is someone that views some spectacle; an onlooker or spectator while competitor is a person or organization against whom one is competing.

As nouns the difference between applicant and competitor

is that applicant is one who applies for something; one who makes request; a petitioner while competitor is a person or organization against whom one is competing.